Search Results - "TAWARA, T"

Effect of structure and composition on optical properties of Er-Sc silicates prepared from multi-nanolayer films by Najar, A, Omi, H, Tawara, T

“…Polycrystalline Er-Sc silicates (Er(x)Sc(2-x)SiO₅ and Er(x)Sc(2-x)Si₂O₇) were fabricated using multilayer nanostructured films of Er₂O₃/SiO₂/Sc₂O₃ deposited on…”
Get full text

Structural analysis and reduction of in-grown stacking faults in 4H–SiC epilayers by Izumi, S., Tsuchida, H., Kamata, I., Tawara, T.

“…We investigated the structure of in-grown stacking faults in the 4H–SiC(0001) epilayers. The in-grown stacking faults nucleate near the substrate/epilayer…”
Get full text

Coherent transfer of orbital angular momentum to excitons by optical four-wave mixing by Ueno, Y, Toda, Y, Adachi, S, Morita, R, Tawara, T

“…We demonstrate the coherent transfer of optical orbital angular momentum (OAM) to the center of mass momentum of excitons in semiconductor GaN using a…”
Get full text

Population dynamics in epitaxial Er2O3 thin films grown on Si(111) by Tawara, T., Omi, H., Hozumi, T., Kaji, R., Adachi, S., Gotoh, H., Sogawa, T.

“…We grow single crystal erbium-oxide (Er2O3) epitaxially on a Si (111) substrate by using molecular beam epitaxy and investigate the population dynamics in Er3+…”
Get full text

Understanding and reduction of degradation phenomena in SiC power devices by Kimoto, T., Iijima, A., Tsuchida, H., Miyazawa, T., Tawara, T., Otsuki, A., Kato, T., Yonezawa, Y.

“…Impacts of extended defects on performance and reliability of SiC power devices are reviewed. Threading dislocations in the state-of-the-art SiC wafers do not…”
Get full text

Positron annihilation study of vacancy-type defects in high-speed deformed Ni, Cu and Fe by Ohkubo, Hideaki, Tang, Z., Nagai, Y., Hasegawa, M., Tawara, T., Kiritani, M.

“…Vacancies and vacancy clusters in Ni, Cu, and Fe induced by high- and low-speed deformations are studied systematically by positron annihilation techniques and…”
Get full text

Precise spectroscopy of 167Er:Y2SiO5 based on laser frequency stabilization using a fiber laser comb by Yasui, S, Hiraishi, M, Ishizawa, A, Omi, H, Kaji, R, Adachi, S, Tawara, T

Get full text

Cavity polaritons in InGaN microcavities at room temperature by TAWARA, T, GOTOH, H, AKASAKA, T, KOBAYASHI, N, SAITOH, T

“…Cavity polaritons are observed in InGaN quantum well (QW) microcavities at room temperature. High-quality microcavities are fabricated by the wafer-bonding of…”
Get full text

Cavity-QED assisted attraction between a cavity mode and an exciton mode in a planar photonic-crystal cavity by Tawara, T, Kamada, H, Tanabe, T, Sogawa, T, Okamoto, H, Yao, P, Pathak, P K, Hughes, S

“…The photoluminescence spectra from a quantum-dot exciton weakly-coupled to a planar photonic-crystal cavity is experimentally investigated by temperature…”
Get full text

Cavity mode emission in weakly coupled quantum dot--cavity systems by Tawara, T, Kamada, H, Hughes, S, Okamoto, H, Notomi, M, Sogawa, T

“…We study the origin of bright leaky-cavity mode emission and its influence on photon statistics in weakly coupled quantum dot - semiconductor cavity systems,…”
Get full text

Piezoelectric effects on photoluminescence properties in 10-nm-thick InGaN quantum wells by Gotoh, H., Tawara, T., Kobayashi, Y., Kobayashi, N., Saitoh, T.

“…We report a large change in the photoluminescence (PL) properties induced by piezoelectric effects found in 10-nm-thick InGaN quantum wells. The time-resolved…”
Get full text

Real-time synchrotoron radiation X-ray diffraction and abnormal temperature dependence of photoluminescence from erbium silicates on SiO2/Si substrates by Omi, H., Tawara, T., Tateishi, M.

“…The erbium silicate formation processes during annealing in Ar gas were monitored by synchrotron radiation grazing incidence X-ray diffraction (GIXD) in real…”
Get full text

Quality factor control and lasing characteristics of InAs/InGaAs quantum dots embedded in photonic-crystal nanocavities by Tawara, T, Kamada, H, Zhang, Y-H, Tanabe, T, Cade, N I, Ding, D, Johnson, S R, Gotoh, H, Kuramochi, E, Notomi, M, Sogawa, T

“…We demonstrate lasing action with a high spontaneous emission factor and temperature insensitivity in InAs/InGaAs quantum dots (QD) embedded in photonic…”
Get full text

Defect structure of gold introduced by high-speed deformation by Tawara, T., Matsukawa, Y., Kiritani, M.

“…The effect of deformation speed on defect structures introduced into bulk gold specimens at 298 K has been investigated systematically over a wide range of…”
Get full text

Charged exciton emission at 1.3 μ m from single InAs quantum dots grown by metalorganic chemical vapor deposition by Cade, N. I., Gotoh, H., Kamada, H., Tawara, T., Sogawa, T., Nakano, H., Okamoto, H.

“…We have studied the emission properties of self-organized InAs quantum dots (QDs) grown in an InGaAs quantum well by metalorganic chemical vapor deposition…”
Get full text

Design and construction of a series of compact humanoid robots and development of biped walk control strategies by Furuta, T., Tawara, T., Okumura, Y., Shimizu, M., Tomiyama, K.

“…Design and construction of compact body humanoid robots and various biped locomotion control strategies implemented onto them in the ESYS humanoid project at…”
Get full text

Detecting spatially localized excitons in InGaN quantum well structures with a micro-photoluminescence technique by Gotoh, H., Akasaka, T., Tawara, T., Kobayashi, Y., Makimoto, T., Nakano, H.

“…Spatially localized excitons are observed in InGaN quantum well structures at 4 K by using a micro-photoluminescence (PL) technique. By combining PL and…”
Get full text

Neurotropism of Swine Haemagglutinating Encephalomyelitis Virus (Coronavirus) in Mice Depending upon Host Age and Route of Infection by Hirano, N, Nomura, R, Tawara, T, Tohyama, K

“…Mice aged 1, 4 or 8 weeks were inoculated with haemagglutinating encephalomyelitis virus (HEV), strain 67N, by the intracerebral (i.c.), intranasal (i.n.),…”
Get full text

Three-dimensional topography using an X-ray microbeam and novel slit technique by Tanuma, R., Kubo, T., Togoh, F., Tawara, T., Saito, A., Fukuda, K., Hayashi, K., Tsusaka, Y.

“…This paper describes section topography using an X‐ray microbeam and a novel slit having a V‐shaped crevice (V‐slit). The V‐slit is characterized by a…”
Get full text

Superior suppression of gate current leakage in Al2O3/Si3N4 bilayer-based AlGaN/GaN insulated gate heterostructure field-effect transistors by Wang, C. X., Maeda, N., Hiroki, M., Tawara, T., Makimoto, T., Kobayahsi, T., Enoki, T.

“…AlGaN/GaN-based metal-insulator-semiconductor heterostructure field-effect transistors (MIS-HFETs) with Al2O3/Si3N4 bilayer as insulator have been investigated…”
Get full text